package socket;

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;

/*
*/
public class Server4 {
    /*版本4.0
    * java.net,ServerSocket
    * 运行在服务器端的Server*/
    private ServerSocket serverSocket;
    private List<PrintWriter> allout =new ArrayList<>();
public Server4(){
         try {
             System.out.printf("正在启动服务器");
             serverSocket =new ServerSocket(8888);
             System.out.printf("服务器启动完毕！");
         } catch (IOException e) {
             e.printStackTrace();
         }
     }

public void Start(){

        try {
            while (true){
                for (int i = 0; i < 1; i++) {
                    System.out.println("等待客户端链接");
                    Socket socket= serverSocket.accept();
                    System.out.println("一个客户端连接上了");
                    //启动一个线程负责与该客户端交互
                    ClientHandler handler=new ClientHandler(socket);
                    Thread t=new Thread(handler);
                    t.start();
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


    public static void main(String[] args) {
        Server4 server=new Server4();
        server.Start();
    }

    private class  ClientHandler implements Runnable{
       private Socket socket;
       private String host;

        public ClientHandler(Socket socket) {
            this.socket = socket;
            //通过socket获取远端计算机的id地址的字符串格式
            host=socket.getInetAddress().getHostAddress();
        }

        public void run() {
            try {
                InputStream in=socket.getInputStream();
                InputStreamReader isr=new InputStreamReader(in, StandardCharsets.UTF_8);
                BufferedReader br=new BufferedReader(isr);

                OutputStream out=socket.getOutputStream();
                OutputStreamWriter osw=new OutputStreamWriter(out,StandardCharsets.UTF_8);
                BufferedWriter bw=new BufferedWriter(osw);
                PrintWriter pw=new PrintWriter(bw,true);
                allout.add(pw);
                String message;
                while ((message=br.readLine())!=null){
                    System.out.println(host+"说："+message);
                   // pw.println(host+"说："+message);
                    for (PrintWriter o: allout ) {
                        o.println(host+"说："+message);
                    }
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

}
